<template>
  <div class="BackgroundColor">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/12.jpg" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form :model="loginFrom" :rules="loginFromRules" ref="loginFromRef" label-width="0" class="login_from">
        <!-- 用户名 -->
        <el-form-item prop="user_name">
          <el-input v-model="loginFrom.user_name" prefix-icon="iconfont icon-03wangluoanquan_zhanghao" placeholder="用户名"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="user_password">
          <el-input v-model="loginFrom.user_password" prefix-icon="iconfont icon-mima" placeholder="密码" type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="ResetLoginFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginFrom: {
        user_name: '晨华',
        user_password: '666666'
      },
      // 表单验证规则
      loginFromRules: {
        // 验证用户名是否合法
        user_name: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        user_password: [
          { required: true, message: '请输入用户名密码', trigger: 'blur' },
          { min: 6, max: 11, message: '长度在 6 到 11 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置表单
    ResetLoginFrom () {
      this.$refs.loginFromRef.resetFields()
    },
    // 点击登录用户
    login () {
      this.$refs.loginFromRef.validate(async (valid) => {
        if (!valid) return false
        const { data: res } = await this.$http.post('login', this.loginFrom)
        if (res.status !== 200) return this.$message.error('登录失败!')
        this.$message.success('登录成功!')
        window.sessionStorage.setItem('token', res.tokenKey)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.BackgroundColor {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}

.login_from {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
